I have a new post on notes that talks about inspiring Facebook cover picshttp://notes.envato.com/inspirations/inspiring-cover-photos-for-your-facebook-timeline/
I would love to know if you guys have come across some other interesting cover pics that inspired you.
I also would like to do a twitter and G+ post about these soon so feel free to drop those in here too.
I use WPEngine, they are pretty good from what I can see so far. They are quick to respond to support tickets.
no experience with MT but was not a big fan of goDaddy hosting ( used to run with them a couple of years ago )
as for CDN and caching WPEngine has their own solution .. they only allow WordPress on their server and so I assume you are after a caching solution for WordPress ( try http://wordpress.org/plugins/w3-total-cache/ , you can hook it up with a CDN like Amazon Cloudfront, MaxCDN, Akamai or Rackspace Cloud Files ).
Hope this helps
When they first talked about it a couple of months ago, they had plans to offer it up via adwords so advertisers can create compelling html5 based ads . But from what it looks like I think it’s not limited to ads but you can create a whole site based off Google Web Designer.
Purists wont touch it. —touché
Noobs wont understand it—they are offering it for free and i am sure there will be a lot of coverage in the coming months on how to use it from many different publications and this could lead to more adoption.